package cn.sjw.service;

import cn.sjw.pojo.Books;

import java.util.List;

public interface BooksService {
    //增加一个Book  
    int addBook(Books book);
    //根据id删除一个Book    
    int deleteBookById(int id);
    //更新Book    
    int updateBook(Books books);
    //根据id查询,返回一个Book    
    Books queryBookById(int id);
    //查询全部Book,返回list集合    
    List<Books> queryAllBook();
}
